<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        let game = prompt('玩几局？');
        for (i = 0; i < game; i++) {//弹框输入写几遍就是玩几局；
            console.log(game);
        }
    </script>
</body>

</html>